Advanced Entanglement from Quantum Dots
Advanced Entanglement from Quantum Dots
DACH: Österreich - Deutschland - Schweiz
Disciplines
Physics, Astronomy (100%)
Keywords
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Time-Bin Entanglement,
Quantum Entanglement,
Quantum Dots
Communication is about to be revolutionized by the usage of quantum mechanics, known as the second quantum revolution. At the heart of this revolution are the exploitation of entangled states, which do not have any classical analogue. Therefore, the efficient creation of entangled states is crucial in this endeavor and the race of the search for the ideal source of entangled photon pairs is at its peak. The main goal of our project is to bring forward semiconductor quantum dots as usable source of entangled photon pairs. A new angle is added by a fundamentally new ingredient, namely the dark exciton states, for the controlled biexciton generation and subsequently the deterministic generation of time-bin entangled photons. We will consider advanced creation of time-bin entangled photon states, as well as multilevel entanglement and multiphoton entanglement using single quantum dots and quantum dot molecules. We aim to achieve these goals by a strong joint theoretical and experimental effort to turn the potential of quantum dots as entangled photon source into a useful set of tools for quantum communication, eventually leading to the construction of usable quantum repeaters.
- Universität Innsbruck - 90%
- Universität Linz - 10%
- Armando Rastelli, Universität Linz , associated research partner
- Dan Dalacu, National Research Council of Canada - Canada
- Philip J. Poole, National Research Council of Canada - Canada
- Christian Schneider, Julius-Maximilians-Universität Würzburg - Germany
- Sven Höfling, Julius-Maximilians-Universität Würzburg - Germany
- Vollrath Martin Axt, Universität Bayreuth - Germany
- Doris Reiter, Westfälische Wilhelms-Universität - Germany
Research Output
- 262 Citations
- 28 Publications
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2024
Title Approaching a fully-polarized state of nuclear spins in a solid DOI 10.1038/s41467-024-45364-2 Type Journal Article Author Dyte H Journal Nature Communications -
2024
Title Is Wave Function Collapse Necessary? Explaining Quantum Nondemolition Measurement of a Spin Qubit within Linear Evolution DOI 10.1103/physrevlett.132.160804 Type Journal Article Author Dyte H Journal Physical Review Letters -
2023
Title Ideal refocusing of an optically active spin qubit under strong hyperfine interactions DOI 10.17863/cam.91956 Type Journal Article Author Shofer N -
2021
Title GaAs quantum dots grown by droplet etching epitaxy as quantum light sources DOI 10.1063/5.0057070 Type Journal Article Author Da Silva S Journal Applied Physics Letters Pages 120502 Link Publication -
2021
Title Electric field induced tuning of electronic correlation in weakly confining quantum dots DOI 10.1103/physrevb.104.165401 Type Journal Article Author Huang H Journal Physical Review B Pages 165401 Link Publication -
2021
Title Strain-Controlled Quantum Dot Fine Structure for Entangled Photon Generation at 1550 nm DOI 10.1021/acs.nanolett.1c04024 Type Journal Article Author Lettner T Journal Nano Letters Pages 10501-10506 Link Publication -
2021
Title Entanglement-based quantum key distribution with a blinking-free quantum dot operated at a temperature up to 20 K DOI 10.1117/1.ap.3.6.065001 Type Journal Article Author Schimpf C Journal Advanced Photonics Pages 065001-065001 Link Publication -
2022
Title Demonstration and modeling of time-bin entangled photons from a quantum dot in a nanowire DOI 10.1063/5.0081874 Type Journal Article Author Aumann P Journal AIP Advances Pages 055115 Link Publication -
2022
Title Multipair-free source of entangled photons in the solid state DOI 10.1103/physrevb.106.l241402 Type Journal Article Author Neuwirth J Journal Physical Review B Link Publication -
2023
Title Quantum dots for photonic quantum information technology DOI 10.1364/aop.490091 Type Journal Article Author Heindel T Journal Advances in Optics and Photonics Pages 613 Link Publication -
2021
Title Quantum dots as potential sources of strongly entangled photons: Perspectives and challenges for applications in quantum networks DOI 10.1063/5.0038729 Type Journal Article Author Schimpf C Journal Applied Physics Letters Pages 100502 Link Publication -
2024
Title Polarized and Unpolarized Emission from a Single Emitter in a Bullseye Resonator DOI 10.1002/lpor.202300835 Type Journal Article Author Buchinger Q Journal Laser & Photonics Reviews -
2022
Title SUPER Scheme in Action: Experimental Demonstration of Red-Detuned Excitation of a Quantum Emitter DOI 10.1021/acs.nanolett.2c01783 Type Journal Article Author Karli Y Journal Nano Letters Pages 6567-6572 Link Publication -
2023
Title Dressed-state analysis of two-color excitation schemes DOI 10.1103/physrevb.107.035425 Type Journal Article Author Bracht T Journal Physical Review B Pages 035425 Link Publication -
2023
Title Ideal refocusing of an optically active spin qubit under strong hyperfine interactions DOI 10.1038/s41565-022-01282-2 Type Journal Article Author Zaporski L Journal Nature Nanotechnology Pages 257-263 Link Publication -
2023
Title Beyond the Four-Level Model: Dark and Hot States in Quantum Dots Degrade Photonic Entanglement DOI 10.1021/acs.nanolett.2c04734 Type Journal Article Author Lehner B Journal Nano Letters Pages 1409-1415 Link Publication -
2023
Title Nuclear spin diffusion in the central spin system of a GaAs/AlGaAs quantum dot DOI 10.1038/s41467-023-38349-0 Type Journal Article Author Millington-Hotze P Journal Nature Communications Pages 2677 Link Publication -
2023
Title Collective excitation of spatio-spectrally distinct quantum dots enabled by chirped pulses DOI 10.1088/2633-4356/acd7c1 Type Journal Article Author Kappe F Journal Materials for Quantum Technology Pages 025006 Link Publication -
2023
Title Two-photon excitation with finite pulses unlocks pure dephasing-induced degradation of entangled photons emitted by quantum dots DOI 10.1103/physrevb.107.235304 Type Journal Article Author Seidelmann T Journal Physical Review B Pages 235304 Link Publication -
2023
Title Hyperfine interaction limits polarization entanglement of photons from semiconductor quantum dots DOI 10.1103/physrevb.108.l081405 Type Journal Article Author Schimpf C Journal Physical Review B Link Publication -
2023
Title Compact chirped fiber Bragg gratings for single-photon generation from quantum dots DOI 10.1063/5.0164222 Type Journal Article Author Remesh V Journal APL Photonics Pages 101301 Link Publication -
2023
Title Signatures of the Optical Stark Effect on Entangled Photon Pairs from Resonantly Pumped Quantum Dots DOI 10.1103/physrevlett.131.166901 Type Journal Article Author Basset F Journal Physical Review Letters Pages 166901 Link Publication -
2023
Title Intermediate Field Coupling of Single Epitaxial Quantum Dots to Plasmonic Waveguides DOI 10.1021/acs.nanolett.3c03442 Type Journal Article Author Seidel M Journal Nano Letters Pages 10532-10537 Link Publication -
2021
Title Demonstration and modelling of time-bin entangled photons from a quantum dot in a nanowire DOI 10.48550/arxiv.2102.00283 Type Other Author Aumann P -
2021
Title Electric field induced tuning of electronic correlation in weakly confining quantum dots DOI 10.48550/arxiv.2105.11244 Type Other Author Csontosová D -
2021
Title GaAs quantum dots grown by droplet etching epitaxy as quantum light sources DOI 10.48550/arxiv.2109.01507 Type Preprint Author Undeutsch G -
2022
Title SUPER Scheme in Action: Experimental Demonstration of Red-detuned Excitation of a Quantum Dot DOI 10.48550/arxiv.2203.00712 Type Other Author Kappe F -
2022
Title Ideal refocusing of an optically active spin qubit under strong hyperfine interactions DOI 10.48550/arxiv.2206.01223 Type Other Author Shofer N